EP2203268B1 - Dispositif et procédé pour ajuster la position radiale des outils dans une dérouleuse pour barres, tubes ou autres pièces à travailler analogues - Google Patents

Dispositif et procédé pour ajuster la position radiale des outils dans une dérouleuse pour barres, tubes ou autres pièces à travailler analogues Download PDF

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Publication number
EP2203268B1
EP2203268B1 EP08803242.0A EP08803242A EP2203268B1 EP 2203268 B1 EP2203268 B1 EP 2203268B1 EP 08803242 A EP08803242 A EP 08803242A EP 2203268 B1 EP2203268 B1 EP 2203268B1
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EP
European Patent Office
Prior art keywords
tools
worked
adjustment
product
motor means
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EP08803242.0A
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German (de)
English (en)
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EP2203268A1 (fr
Inventor
Carlo Mattanza
Andrea Lavaroni
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Danieli and C Officine Meccaniche SpA
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Danieli and C Officine Meccaniche SpA
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D79/00—Methods, machines, or devices not covered elsewhere, for working metal by removal of material
    • B23D79/12—Machines or devices for peeling bars or tubes making use of cutting bits arranged around the workpiece, otherwise than by turning

Definitions

  • the present invention concerns a device and method to adjust the radial position of the tools in a peeling machine for bars, tubes or similar oblong products, in which the tools are disposed radially on a rotary head, in a central cavity of which the product to be worked or being worked is able to run, drawn and/or thrust by feed means.
  • the tools are able to reduce the diameter of the product to be worked, by removing chip.
  • a first motor means is able to make the tool-bearing head rotate.
  • the device comprises essentially a kinematic-differential unit, connected to second motor means, and control means, connected at least to the second motor means, in order to selectively cause the simultaneous and radial displacement of the tools and thus adjust their distance from the product to be worked, also while the tool-bearing head is rotating (see for example EP-A-0047362 ).
  • the peeling machine is a machine tool which removes chip, with functions similar to those of a lathe. Whereas in the lathe the piece to be worked rotates and a single tool performs the relative feed, in the peeling machine there are a plurality of tools that rotate around the piece while it advances.
  • the tools also called inserts or cutters, are normally rectangular in shape, or triangular, and are mounted on suitable insert-bearing cartridges.
  • Peeling machines are known in which the tools are adjusted radially by means of a conical bushing or a worm screw; however, both these known solutions do not allow to annul the plays, and this is a disadvantage for the working accuracy and therefore for the tolerances in size and, mainly, shape (in particular the triangular nature which the market requires, with minimum values to reduce times and costs of grinding and other finishing) amplified by the defects caused by rolling and other productive processes which, with current techniques, are not completely eliminated.
  • One purpose of the present invention is to achieve a peeling machine which has a good rigidity, so that there is no play in the axial adjustment mechanisms of the tools, to obtain more precise tolerances of size and shape (viz. triangular) of the worked product, given the same conditions, compared with the state of the art.
  • Another purpose of the present invention is to obtain great sensitivity and considerable accuracy in the adjustment of the tools, and to allow to adjust the tools without causing axial forces that negatively affect the mandrel bearings.
  • the Applicant has devised, tested and embodied the present invention to overcome the shortcomings of the state of the art and to obtain these and other purposes and advantages.
  • the adjustment device according to the present invention is able to be used in a peeling machine for bars, tubes or similar oblong products to be worked, in which the peeling machine comprises a plurality of tools, feed means, able to feed axially each product to be worked or being worked, along a longitudinal axis thereof, and a rotary head, which is provided with a central through cavity, in which the product to be worked or being worked is able to run, and which is able to rotate with respect to a fixed support, coaxially to the longitudinal axis, commanded by first motor means, and in which the tools are mounted on the rotary head and are associated with corresponding adjustment units.
  • the adjustment device comprises: second motor means, able to drive the adjustment units; a kinematic-differential unit interposed between the second motor means and the adjustment units; and control means, associated at least with the second motor means, to cause the selective and simultaneous activation of the adjustment units and thus to effect the micrometric adjustment of the radial position of the tools with respect to the longitudinal axis, also while the rotary head is rotating.
  • the first motor means comprises a continuous current electric motor
  • the second motor means comprises a brushless electric motor
  • the kinematic-differential unit comprises a differential member, connected both to the first motor means, in order to rotate normally in synchrony with the rotary head, and also to the second motor means, which is able to act selectively on the internal pinions of the differential, so as to add or subtract revs to the output member of the latter and thus to activate the units to adjust the mandrels.
  • the kinematic-differential unit also comprises a plurality of toothed wheels, engaging with each other and having transmission ratios such that a determinate micrometric radial displacement of the tools (for example 0.01 mm) corresponds to a determinate angle of rotation of said second motor means (for example 22.5° of the brushless motor).
  • control means is associated with a means to detect the actual diameter of the worked product, so as to intervene automatically on the second motor means and to adjust the radial position of the tools, until the actual diameter of the worked product becomes equal to the preset diameter.
  • the present invention further provides an adjustment method according to claim 8.
  • the adjustment method according to the present invention also innovative, comprises a first step of making the rotary head and tools rotate, by means of the first motor means, and simultaneously of axially feeding the product to be worked, by means of the feed means, and advantageously also the following steps:
  • an adjustment device 100 is shown mounted on a peeling machine 10, to adjust the radial position of the tools 15 of the latter with respect to a product to be worked or being worked 18, which can be for example a bar, a tube, or a similar oblong product, having a longitudinal axis X and a circular cross section.
  • the peeling machine 10 is for example of the type described in the patent of industrial invention filed by the present Applicant at the same time as the present application.
  • the peeling machine 10 comprises a rotary head 12, indicated schematically by the dashes in fig. 1 , which is associated with a mandrel 14, rotatable on a fixed support 11, shown schematically only representing its relative supporting bearings.
  • Each tool 15 is associated with a corresponding adjustment unit 16, essentially consisting of a slider 20, mobile radially with respect to the longitudinal axis X and on which a corresponding tool 15 is mounted, a calibrated screw 21 and a wedge shaped hub 22, connected to the slider 20 and on which the calibrated screw 21 is screwed.
  • the peeling machine 20 comprises feed means 17, for example consisting of feed rollers 17a commanded by a command member 17b which, in a known manner, are able to feed the product to be worked 18 along the longitudinal axis X in the direction indicated by the arrow F.
  • a first motor means for example comprising a continuous current electric motor M1, associated with a rotate synchronization device or encoder E1, is able to make the rotary head 12 rotate with respect to the fixed support 11 and the product to be worked 18.
  • the electric motor M1 is connected by means of a speed gear 45 and two toothed guide wheels 46 and 47, to a toothed wheel 48, solid with the mandrel 14.
  • the motor M1 and the encoder E1 are in turn connected electrically to a control unit 50 ( fig. 2 ), having inside a processor of a known type and not shown in the drawings, for example a PLC.
  • the adjustment device 100 ( fig. 1 ) comprises second motor means comprising for example a brushless electric motor M2, of a known type, having a toothed pinion 60 connected to a synchronization device, or encoder E2, and to a toothed wheel 61 by means of a toothed guide wheel 62.
  • second motor means comprising for example a brushless electric motor M2, of a known type, having a toothed pinion 60 connected to a synchronization device, or encoder E2, and to a toothed wheel 61 by means of a toothed guide wheel 62.
  • the electric motor M2 and the encoder E2 are also connected to the control unit 50 ( fig. 2 ). Furthermore, a laser device 65, positioned downstream of the tools 15 and the mandrel 14 ( fig. 1 ), and a control panel 66 ( fig. 2 ), of a known type and provided with a console with a keyboard, are also connected to the control unit 50.
  • the function of the laser device 65 is to constantly control the actual size of the product already worked 18 ( fig. 1 ), and to send the data to the control unit 50 ( fig. 2 ), which is programmed to define the adjustment values of the tools 15 ( fig. 1 ) according to the discrepancy between the programmed size and the actual size of the product 18, which could be different due to the wear on the tools 15.
  • the adjustment device 100 also comprises a kinematic-differential unit 101, which in turn comprises a toothed wheel 70 keyed onto the mandrel 14 and engaging with a toothed wheel 71.
  • a toothed wheel 73 is also keyed onto the shaft 72 of the toothed wheel 71, and in turn commands a toothed wheel 75, having a number of teeth double that of the toothed wheel 73, so that the number of revs is halved.
  • the toothed wheel 75 is solid with a carrier of a differential 76 that carries inside it two conical pinions 77 (satellites), which are able to effect a revolution on a conical pinion 79.
  • the conical pinion 79 is normally static, because it is connected to the brushless motor M2, which is normally stationary while remaining active, waiting to receive a signal to adjust the tools 15 from the control unit 50 ( fig. 2 ).
  • the two conical pinions 77 ( fig. 1 ) are mounted idle on the carrier of the differential 76 so that, engaging with the static conical pinion 79, they are able to perform not only a rotation together with the carrier of the differential 76 but also a revolution around the conical pinion 79.
  • a toothed wheel 82 is keyed, which, by means of an intermediate toothed wheel 83, is able to make rotate a toothed wheel 85 having the same number of revs as the toothed wheel 70.
  • the kinematic-differential unit 101 comprises a pipe 86, coaxial with the mandrel 14 and on which, at the two ends, the toothed wheel 85 and a toothed wheel 31 are keyed.
  • a toothed wheel 32 for each tool 15 engages with the toothed wheel 31.
  • Each toothed wheel 32 has a shaft 33 mounted rotatable on the rotary head 12 and on which a second toothed wheel 35 is also keyed, smaller than the corresponding toothed wheel 32 and in turn engaging with a toothed wheel 36, coaxially solid with the corresponding calibrated screw 21.
  • the radial adjustment of the tools 15 with respect to the longitudinal axis X is done as follows.
  • the continuous current motor M1 rotates, controlled by the control unit 50, and the brushless motor M2 is still.
  • the toothed wheel 70 of the mandrel 14 and the toothed wheel 85 rotate at the same number of revs, the tools 15 maintain a determinate radial position with respect to the longitudinal axis X.
  • This adjustment operation can be carried out also while the rotary head 12 and the mandrels 15 are rotating, that is, without stopping the motor M1.

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Turning (AREA)
  • Retarders (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Details Of Cutting Devices (AREA)

Claims (8)

  1. Dispositif de réglage pour le réglage radial des outils (15) dans une dérouleuse (10) pour barres, tubes ou produits oblongs similaires destinés à être travaillés (18), dans lequel ladite dérouleuse (10) comprend un moyen d'alimentation (17) capable de faire avancer axialement chaque produit destiné à être travaillé (18) le long d'un axe longitudinal (X) de celle-ci, et une tête rotative (12), qui est dotée d'une cavité traversante centrale (13), que ledit produit destiné à être travaillé (18) peut traverser, et qui peut tourner par rapport à un support fixe (11), coaxialement avec ledit axe longitudinal (X), commandée par un premier moyen de moteur (M1), et dans lequel lesdits outils (15) sont montés sur ladite tête rotative (12) et associés à des unités de réglage correspondantes (16), ledit dispositif comprenant un second moyen de moteur (M2), capable d'entraîner lesdites unités de réglage (16), le dispositif comprenant en outre une unité de cinématique/différentiel (101) intercalée entre ledit second moyen de moteur (M2) et lesdites unités de réglage (16) et un moyen de commande (50) associé au moins avec ledit second moyen de moteur (M2), de façon à provoquer l'activation sélective et simultanée desdites unités de réglage (16) et à effectuer le réglage micrométrique de la position radiale desdits outils (15) par rapport audit axe longitudinal (X), également pendant que ladite tête rotative (12) est en rotation, caractérisé en ce que chacune desdites unités de réglage (16) comprend un coulisseau (20), mobile radialement par rapport audit axe longitudinal (X) et sur lequel l'un desdits outils (15) est monté, une vis calibrée (21) et un poinçon en forme de coin (22) raccordé au coulisseau (20) et sur lequel la vis calibrée (21) est vissée, et en ce qu'une rotation dudit second moyen de moteur (M2) est transmise à ladite vis calibrée (21) au moyen de roues dentées (62, 61, 82, 83, 31, 32, 35, 36) de façon à mettre en rotation ladite vis calibrée (21) vers la gauche ou vers la droite, en déplaçant ainsi le poinçon (22) et, ensuite, le coulisseau (20) et l'outil relatif (15), avec une variation consécutive du diamètre du produit (18).
  2. Dispositif de réglage selon la revendication 1, caractérisé en ce que ledit second moyen de moteur comprend un moteur électrique sans balai (M2).
  3. Dispositif de réglage selon la revendication 1 ou 2, caractérisé en ce que ladite unité de cinématique/différentiel (101) comprend un organe différentiel (56), raccordé audit premier moyen de moteur (M1), afin de tourner normalement en synchronisme avec ladite tête rotative (12), et également audit second moyen de moteur (M2).
  4. Dispositif de réglage selon la revendication 3, caractérisé en ce que ledit second moyen de moteur (M2) peut agir sélectivement sur les pignons internes dudit organe différentiel (56), afin d'ajouter ou de soustraire des tours à l'organe de sortie dudit différentiel (56) et d'activer lesdites unités (16) pour régler lesdits outils (15).
  5. Dispositif de réglage selon l'une quelconque des revendications précédentes, caractérisé en ce que ladite unité de cinématique/différentiel (100) comprend une pluralité desdites roues dentées, venant en prise les unes avec les autres et ayant des rapports de transmission tels qu'un déplacement radial micrométrique déterminé desdits outils (15) correspond à un angle de rotation déterminé dudit second moyen de moteur (M2).
  6. Dispositif de réglage selon l'une quelconque des revendications précédentes, caractérisé en ce que ledit moyen de commande (50) est associé à un moyen de détection du diamètre réel dudit produit travaillé (18), afin d'intervenir automatiquement sur ledit second moyen de moteur (M2) et de régler la position radiale desdits outils (15), jusqu'à ce que le diamètre réel dudit produit travaillé (18) devienne sensiblement égal au diamètre préétabli.
  7. Dispositif de réglage selon la revendication 6, caractérisé en ce que ledit moyen de détection comprend un dispositif laser (65) disposé en correspondance avec la surface dudit produit étant travaillé (18), en aval desdits outils (15).
  8. Procédé de réglage radial des outils (15) dans une dérouleuse (10) pour barres, tubes ou produits oblongs similaires destinés à être travaillés (18), en utilisant un dispositif de réglage selon la revendication 1, dans lequel ladite dérouleuse (10) comprend un moyen d'alimentation (17) capable de faire avancer axialement chaque produit destiné à être travaillé (18) le long d'un axe longitudinal (X) de celle-ci, et une tête rotative (12), qui est dotée d'une cavité traversante centrale (13), que ledit produit destiné à être travaillé peut traverser, et qui peut tourner par rapport à un support fixe (11), coaxialement avec ledit axe longitudinal (X), commandée par un premier moyen de moteur (M1), et dans lequel lesdits outils (15) sont montés sur ladite tête rotative (12) et associés à des unités de réglage correspondantes (16), comprenant une étape de mise en rotation de ladite tête rotative (12) et desdits outils (15) au moyen dudit premier moyen de moteur (M1) et d'alimentation axiale simultanée dudit produit destiné à être travaillé (18) au moyen dudit moyen d'alimentation (17), caractérisé en ce qu'il comprend en outre les étapes suivantes :
    - la détection, en aval desdits outils (15), du diamètre réel du produit travaillé (18) et l'envoi des données à une unité de commande (50) qui compare les données à la valeur du diamètre préétabli ;
    - l'activation sélective d'un dispositif de réglage radial des outils (15) de sorte qu'un second moyen de moteur (M2) entraîne lesdites unités de réglage (16), au moyen d'une unité de cinématique/différentiel (101), également pendant que ladite tête rotative (12) et lesdits outils (15) sont en rotation.
EP08803242.0A 2007-09-10 2008-08-27 Dispositif et procédé pour ajuster la position radiale des outils dans une dérouleuse pour barres, tubes ou autres pièces à travailler analogues Active EP2203268B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITUD20070162 ITUD20070162A1 (it) 2007-09-10 2007-09-10 Dispositivo e procedimento di regolazione della posizione radiale degli utensili di una macchina pelatrice per barre, tubi, o simili prodotti oblunghi
PCT/EP2008/061175 WO2009033948A1 (fr) 2007-09-10 2008-08-27 Dispositif et procédé pour ajuster la position radiale des outils dans une dérouleuse pour barres, tubes ou autres pièces à travailler analogues

Publications (2)

Publication Number Publication Date
EP2203268A1 EP2203268A1 (fr) 2010-07-07
EP2203268B1 true EP2203268B1 (fr) 2014-07-02

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EP08803242.0A Active EP2203268B1 (fr) 2007-09-10 2008-08-27 Dispositif et procédé pour ajuster la position radiale des outils dans une dérouleuse pour barres, tubes ou autres pièces à travailler analogues

Country Status (4)

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EP (1) EP2203268B1 (fr)
CN (1) CN101801570B (fr)
IT (1) ITUD20070162A1 (fr)
WO (1) WO2009033948A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITUD20150055A1 (it) * 2015-04-21 2016-10-21 Danieli Off Mecc Macchina pelatrice per prodotti oblunghi
JP2016203328A (ja) * 2015-04-24 2016-12-08 コニカミノルタ株式会社 加工方法及び加工装置
CN107621803A (zh) * 2017-08-31 2018-01-23 太仓贝斯特机械设备有限公司 一种精准定位的自动剥皮机及其自动化控制方法
IT202000004843A1 (it) * 2020-03-06 2021-09-06 Danieli Off Mecc Macchina pelatrice per prodotti oblunghi
CN118455620B (zh) * 2024-07-09 2024-09-27 溧阳市茂景达科技有限公司 一种电梯导轨定尺锯切翻转装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1752341B2 (de) * 1968-05-10 1972-03-16 Messerkopf insbesondere fuer schaelmaschinen
US4291600A (en) * 1978-02-07 1981-09-29 Kobe Steel, Limited Process and apparatus for cutting circumferential surface to remove rod surface flaws
DE3031871A1 (de) * 1980-08-23 1982-09-23 Th. Kieserling & Albrecht Gmbh & Co, 5650 Solingen Schaelmaschine
DE3821555A1 (de) * 1988-06-25 1989-12-28 Kieserling & Albrecht Schaelmaschine
DE4019286A1 (de) * 1990-06-16 1991-12-19 Kieserling & Albrecht Schaelmaschine

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Publication number Publication date
ITUD20070162A1 (it) 2009-03-11
CN101801570A (zh) 2010-08-11
CN101801570B (zh) 2012-06-13
EP2203268A1 (fr) 2010-07-07
WO2009033948A1 (fr) 2009-03-19

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